trying to get 4 gauge power wire from alternator to battery

Topic: trying to get 4 gauge power wire from alternator to battery (Read 4455 times) previous topic - next topic

trying to get 4 gauge power wire from alternator to battery

Reply #15 – March 10, 2013, 03:12:43 PM

Quote from: Kitz Kat;410944

I think the OP asked how to run a stock 2g alt. with 4gauge, not sure why he would want to do that.

That is a good point. The stock alternator has a connector rather than a stud for the output terminal. It could be done with a splice and still save some power, but since 3G is so simple, it's a no-brainer if you can buy the alternator.

trying to get 4 gauge power wire from alternator to battery

Reply #16 – March 10, 2013, 04:40:26 PM

Quote from: Seek;410949

That is a good point. The stock alternator has a connector rather than a stud for the output terminal. It could be done with a splice and still save some power, but since 3G is so simple, it's a no-brainer if you can buy the alternator.

Lol! Didn't even think about that. I junked my stocker ASAP and never looked back. It's also very difficult to take a good picture of just one wire with all the others in the way!

trying to get 4 gauge power wire from alternator to battery

Reply #17 – March 10, 2013, 05:26:55 PM

Quote from: jrad235;410951

What is that yellow wire running to? If it's what I think it is, I will make you fix it.

trying to get 4 gauge power wire from alternator to battery

Reply #18 – March 10, 2013, 09:55:17 PM

12si Alternators
100A Specifications
70A @ 2,400 RPM @ 13.2 VDC @ 77F
Operating Range: -40C to 150C
Maximum RPM: 18,000

140A Specifications
80A @ 2,400 RPM @ 13.2 VDC @ 77F
Operating Range: -40C to 150C
Maximum RPM: 18,000

Recommended wire size #8

trying to get 4 gauge power wire from alternator to battery

Reply #19 – March 10, 2013, 11:05:25 PM

Quote from: Seek;410957

What is that yellow wire running to? If it's what I think it is, I will make you fix it.

Lol, I know. Eventually.

trying to get 4 gauge power wire from alternator to battery

Reply #20 – March 11, 2013, 05:41:43 AM

No one picked up on the gain between the 100A alt and the 140A alternator@ idle!!!!!!!!!!!

Only 10 Amps and that is exactly why these so called MEGA alternators are BS!!!

I am going to say that not one person on this site would need more than a 100A alternator. Unless they have one of those sound systems that need a portible HONDA generator in the TRUNK. Just saying!!

My DURAMAX has a 105A alt from the factory. It is loaded with 3 1100 CCA batterys and all the goodies any other car would have and more. It has 150K on the speedo and the alt is original. And further more it is fed with a number 8 wire.

Also it has not only a Voltmeter it also has an AMMETER. After a cold start and recovery. APP 5 Minutes the ammeter reads a solid Center pointer which means the alt is yawning and carrying the load at basically no discharge or charge indication on the gauge. The voltmeter is rock solid at 14.6 after the truck settles in to float mode. AM I MISSING SOMETHING ???????????

trying to get 4 gauge power wire from alternator to battery

Reply #21 – March 11, 2013, 01:20:20 PM

yeah maybe just switching to 3g maybe the best bet